The #40™L has all the features of their excellent 40A2 sight" but has a lower profile" allowing more clearance for mounting optics to your flat-top receiver and allows lower mounting" miniaturized windage knob with .75 MOA adjustment and a very new and unique dual aperture. Folded height is only .610".

Features:
Leans to the rear so as to fold in the correct direction if dropped and maintains their zero for accuracy